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基于功率和波长锁定的可调谐飞秒光学参量振荡器

Tunable Femtosecond Optical Parametric Oscillator Based on Power and Wavelength Locking

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摘要

设计并搭建了可调谐飞秒光学参量振荡系统, 研究了不同腔长处信号光的稳定性, 通过比例积分控制系统控制腔长, 分别利用功率锁定和波长锁定两种方法提升了系统的信号光输出稳定性, 对比了两种方法分别对信号光输出功率和光谱稳定性的提升效果, 研究了两种锁定方式的锁定特点。实验中, 利用光纤飞秒激光器抽运PPLN晶体, 实现了信号光中心波长在1317~1610 nm连续调谐。通过功率锁定, 将15 min内信号光的功率稳定性提升至0.16%, 波长稳定性提升至0.35%; 通过波长锁定, 将15 min内信号光的功率稳定性提升至0.25%, 波长稳定性提升至0.03%, 利用两种方法都实现了信号光输出功率和波长稳定性的提升。不同的应用领域对于飞秒光学参量振荡器输出信号光功率稳定性及光谱稳定性有不同的要求, 本研究对比了两种锁定方式的锁定效果, 为今后相关研究提供了实验依据与参考。

Abstract

A tunable femtosecond optical parametric oscillator is designed and built, and the signal light stability with different cavity lengths is studied. The output stability is improved by the method of power and wavelength locking respectively, and the cavity length is controlled by the proportional-integral control system. The effects of the two methods on improving the signal optical output power and spectral stability are compared. The output wavelength of the oscillator can be tuned from 1317 nm to 1610 nm. The standard deviation of signal output power and wavelength is promoted to 0.16% and 0.35% by using the power stabilization method over a period of 15 min, and to 0.25% and 0.03% by using the wavelength stabilization method over the same period of time. It proves that both the power stabilization method and the wavelength stabilization method are sufficient for output stability in optical parametric oscillator. The requirement of power stability and wavelength stability for the output signal of femtosecond optical parametric oscillator varies from different applications, this work compares and studies the locking effects of two locking methods, and provides experimental basis and reference for future research.

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中图分类号:O437

DOI:10.3788/cjl201845.1001006

所属栏目:激光器件与激光物理

基金项目:国家自然科学基金(11527808,61675150,61535009)、天津市杰出青年科学基金项目 (17JCJQJC43500)

收稿日期:2018-03-29

修改稿日期:2018-04-26

网络出版日期:2018-05-22

作者单位    点击查看

杨文凯:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
宋有建:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
范锦涛:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
刘宇宏:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
田昊晨:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
李小英:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
胡明列:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072

联系人作者:宋有建(yjsong@tju.edu.cn)

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引用该论文

Yang Wenkai,Song Youjian,Fan Jintao,Liu Yuhong,Tian Haochen,Li Xiaoying,Hu Minglie. Tunable Femtosecond Optical Parametric Oscillator Based on Power and Wavelength Locking[J]. Chinese Journal of Lasers, 2018, 45(10): 1001006

杨文凯,宋有建,范锦涛,刘宇宏,田昊晨,李小英,胡明列. 基于功率和波长锁定的可调谐飞秒光学参量振荡器[J]. 中国激光, 2018, 45(10): 1001006

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